Malicious PDF — malware analysis report

Static analysis result for SHA-256 a85754dcb9ebec96…

MALICIOUS

PDF

58.2 KB Created: 2021-03-27 10:35:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: d6cd4ae34842e1cc329f1d7b9ff7be72 SHA-1: 4c1c609ccfe800ff2e55779e004b46548a4f2cff SHA-256: a85754dcb9ebec968adf70de8804cf1702490ce9fa98860d77c142f3348e93bb
184 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a large number of external links, many of which point to disposable domains, indicating a link farm designed for SEO manipulation or phishing. The ClamAV detection and ML classifier strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and link farm behavior are indicative of a phishing or malware distribution lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7554

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://gimoguvi.ru/award?keyword=panchatantra+stories+in+kannada+pdf+download PDF link annotation
    • http://prostotit.site/xbox_360_error_3-57-00cuw71.pdfIn PDF document text
    • https://cdn.sqhk.co/libudezetuv/tjd0LqC/wepejitigoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453575/normal_605ba1b945158.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369772/normal_6057b936c9156.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480732/normal_600ceb175d798.pdfIn PDF document text
    • https://cdn.sqhk.co/viliwogid/jciahb4/music_video_maker_photo_slideshow_apk_download.pdfIn PDF document text
    • https://fofapisobav.weebly.com/uploads/1/3/4/7/134712410/favokesigax.pdfIn PDF document text
    • https://jebilazi.weebly.com/uploads/1/3/1/8/131856389/c3da2f8107161.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407793/normal_5ffdd344cd4e5.pdfIn PDF document text
    • https://cdn.sqhk.co/retobumoki/Vd0Xjii/word_shuffle_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/xororasomig/8dXibTf/netflix_movies_christmas_drop.pdfIn PDF document text
    • https://dananiruw.weebly.com/uploads/1/3/2/7/132741593/tipugamosava-madovepalewade.pdfIn PDF document text
    • https://cdn.sqhk.co/joxomawezu/giaBjec/best_hashtags_generator_instagram.pdfIn PDF document text
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    • http://liketime.online/waxumojijuwodg18xo.pdfIn PDF document text
    • https://ziloxewimufe.weebly.com/uploads/1/3/0/8/130813797/60cc3.pdfIn PDF document text
    • https://cdn.sqhk.co/rawatajizefu/1uugiic/starz_free_trial_amazon_prime.pdfIn PDF document text
    • https://cdn.sqhk.co/bidogefapo/NibN85x/62085402562.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447276/normal_602b54ff16abf.pdfIn PDF document text
    • https://cdn.sqhk.co/gepeduvo/WiemZha/vajofepevebegelapumomado.pdfIn PDF document text
    • https://gebiralegesexi.weebly.com/uploads/1/3/0/8/130814020/muwaxumokepepix-purem.pdfIn PDF document text
    • https://cdn.sqhk.co/walamalesumi/ggQSgfO/14540148404.pdfIn PDF document text
    • https://cdn.sqhk.co/vinogusi/cBiihgN/final_war_strategy_shooting_fps_games.pdfIn PDF document text
    • https://s3.amazonaws.com/tawovojo/48432351085.pdfIn PDF document text
    • https://s3.amazonaws.com/fopalew/25746780664.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/how_to_run_john_the_ripper_on_kali.pdfIn PDF document text

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